Valve for ice-machines.



State" of. Kentucky,

' TTNITEE STATES PATENT OFFICE:

FREDERICK WQFELSBERG, or DAYTON, KENTUCKY, ASS'IGNOR. TO THE TRIUMPH IoE- MACHINE ooMP N OF CINCINNATI, orno. I VALVE FOR Ice-MACHINES.

rib. 826,5 55

To all whom/it mag/concern? BERG, a citizen of the United States, residin at D'aytonfiirthe county of'Campbell an n have invented certain new and useful Improvements in Valves for Ice Machines, of which the following is a full, clear,- and exact specification.

ments in the-construction of valves particularly adapted for use in ice-makingmachinery.

It often happens that-in certain-parts .of refri erating or ice-making machines in whicli space available or the longitudinal ment of the valve-spindle is so small that it is impossible to employ the ordinary con-' struction of valve having considerable'longi tudinal movementof the spindle; and it is one of the objects of my resent invention to produce a valve that wi operate'efliciently and easily under conditions which will not permit the use of the ordinary form of valve.

A further object of. my invention is to do away with the rotary movement of'the valve" on its seat and the consequent rapid wearing away of the valve and seat, which, nec'essi- The invention therefore consists of a globe- I I valve in which the valve-disk is arranged tomove up or down on the valve-spindle as the latter rotates, said spindle maintaining a posi-' tive position relative to the valvecasing. The valve-disk is preferably constra ned to move rectilinearly and without rotation.

The invention further consists of a donblee seated valve-disk mounted for rectlllnear.

movement without rotation on a rotatable valve-spindle, a stuflin -boX for said spindle, a valve-seat with whidli said valve-disk engages when atone limit of its movement, and a second valve-seat with which said disk en- Specification of Letters lP at enta Application filed J'une 14,l906. Serial No. 265,150,

My present mvention relates to improve-- controlling valves, are emplo ed the. move' Patented Ju1y 24, .1906. I

ment', said disk when in its latter position sealing the opening through which the valve spindle passes, so as to permit the valvestufimaintained in the valve-casing. I

In the accompanying drawings, which illustion, Figure l is an'end elevation of my im proved valve. Fig. 2 is a sectional elevation .onthe line 2 2 of Fig. 1, the valve being shownclosed on its lower seat; and Fig. 3 is a sectional elevation similar to Fig. 2 of part of seats Referring now to the drawin s, the valve casing or body 5 is provided wit .the brid e 6, carrying the lower seat 7, upon which t 'e valvedisk 8 is adapted to rest I when the valve is in its close position, as shown in Fi 1 This valve-disk is provided with a cy indrical extension 8*, threaded on its inner surface and engaging the threaded portion '13 and-down movement on said spindle as t e latter is rotated by the handle20. The valvedisk 8 is constrained to move rectilinearly without rotation by means of the dowel-pins 24, mounted in the guide-sleeve 11 and, engagextensions 8. Thetop'of the valve-disk 8 is provided with a valve-seat 9, which is adapted to enga e the upp'er valve-seat 23 when moves. The valve-spindle 12 is prevented om moving longitudinally by the collar 14, which is held between the shoulders 15,

surface of the guide-sleeve 11. The guidesleeve has formed thereon an annular collar '27, which rests upon the annular shoulder 28 in the valve-casing. Said sleeve is held tightly in position by the hood-15 when the latter is fastened'in position on the casing by the nuts 16 and'is prevented'i'rom rotating between the casin 5, the hood 15, and the sleeve llis-a suita 1e packing 22, which p'revents leaking of the ammonia at. this point. The upper part of the valve-spindle is surrounde ing the grooves 25, formed in the cylindrical the valve- 'sk is in its' upper limiting posi-v tion. .(Shown in Fig. 3.) The valve-seats- 10 and 23 areof Babbitt metal in dovetail gages when at the opposite limit of its move 4' ing-box to be repacked while the pressure is 'trate the preferred embodiment of my inven the valve, showing same closed'on its'upper 'of the valve-spindle 12, so as to have an u formed on the valve-hood 15 and the upper I I by means-of the pin 21. Located at the joint I05 by a stuffing-box comprising the packing 19,- the thimble 18, and the cap-nut 17, screwed on the hood 15. A vent 26 is provided to prevent the pocketing of fluid in chamber 29. When the valve is in the, position shown in'Fig. 3, it isreadily' seen that the passage-Way throu h the valve-hood and sleeve 11 occupie by spindle 12 is effectually sealed, so that the nut 17 and thimble 18 may be removed and the stufling-box re acked while pressure is maintained in the va ve-casing. v

The various parts of the valve are readily accessible and can be reached by simply re.- mcving nuts 16. Rotary movement of the valve-spindle without lon ment causes a reduction of t e Wearand tear on the packing in the stuffing-box, and the v rectilinear movement of the valve-disk withoutrotary movement prevents grinding on the valve-seats and gives the valve longer life and renders it more efficient and efiective in its operation. p

In the ap ended claims I aim to cover all chan es an modificationsof my'invention whic do not involve adeparture from its spirit and scope.

i for causing itudinal move-' Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

A valve, comprisin a casing, vprovided with a'hood, a valveisk, a spindle, means for rotating said spindle, means for reventing a longitudinal movement thereo means e as the latter rotates, said means said spind -threaded cylinconsisting of an internall drical extension on said dis surrounding and engaging a threaded end of said spindle, and a' guide-sleeve surrounding said cylindrical extension and provided with means-for constrainingsaid disk to move rectilineai'ly without rotation, said guide-sleeve being separate from the valve-casing and hood and held in position between said casing and hood and provided with means for preventing its rotation.

In testimony whereof I a'fiix my signature.

in the presence of two witnesses.

FREDERICK W. FELSBERG.

. Witnesses: 1 'EDW. MAULINIER, 'J. S. LOUIS.

said disk to move up or down on 

